onstat - Server Status Line

The onstat - command will produce a status line for the Informix server. The status line is produced with every onstat command that is executed with a few exceptions. The first portion identifies the server and the current version. The second portion indicates the status of the server. The status of the Informix server can take on one of the following 9 values:

```
Initialization
```
```
Shutting Down
```
```
Quiescent
```
```
OnLine
```
```
Fast Recovery
```
```
Abort
```
```
Archive Backup
```
```
Unknown
```
```
Read-Only
```

Additionally, the server status can be accompanied by secondary information. The value of (Prim) or (Sec) will be displayed for systems running data replication. (CKPT REQ) will appear if a checkpoint is required; (CKPT INP) will appear if a checkpoint is in progress; and (LONGTX) will appear if a long transaction is currently being rolled back.

The final two portions provide the length of time the server has been up, followed by the total size of the shared memory segments (resident + virtual) used by the server in Kbytes. If the server is blocked from performing any work, the reason for the block is added to the end of the status line. The possible reasons for a blocked system include:

```
CKPT            Checkpoint
```
```
LONGTX          Long Transaction
```
```
ARCHIVE         Archive Requested Block
```

MEDIA_FAILURE  DBSpace being marked down

```
HANG_SYSTEM    Server Requested Block
```
```
DBS_DROP       DBSpace is being dropped
```
```
DDR            DDR Synchronization
```
```
LBU            Prevent Log Backups
```